Aerospace BDR module life quantification method based on heterogeneous information fusion

Abstract

The invention provides a spaceflight BDR module life quantification method based on heterogeneous information fusion. The method comprises the following steps: S1, analyzing historical data of a spaceflight BDR module; s2, performing multi-stage task FMMEA analysis on the spaceflight BDR module, and determining fault elements influencing the performance of the spaceflight BDR module; s3, designing an accelerated degradation experiment scheme based on key components; s4, constructing a part-level life quantitative model; s5, constructing a system-level life quantitative model; s6, judging whether the system-level reliability index meets the requirement or not, if the system-level reliability index does not meet the requirement, returning to the step S4, and reconstructing the component-level life quantitative model; and S7, determining a life prediction model of the spaceflight BDR module. According to the method, FMMEA analysis is carried out on the spaceflight BDR module, and then part-level and system-level life quantitative modeling is carried out, so that reliable life prediction can be carried out on the spaceflight BDR module, and the obtained life quantitative method also provides method support for guiding life quantification of other spaceflight electronic products.

Description

technical field [0001] The invention relates to the field of life prediction of aerospace electronic products, in particular to an aerospace BDR module life quantification method based on heterogeneous information fusion. Background technique [0002] Aerospace electronic products are an important part of spacecraft, and their effective working life is a key factor in determining the life of a spacecraft. There have been situations in spacecraft models where the working life of electronic products was too short, causing the working life to end prematurely. At the same time, due to the inability to accurately control the working life of electronic products, the spacecraft had to be equipped with many redundant and backup electronic products, which caused problems such as complex system, heavy weight, and high power consumption, and increased the complexity of the design. Sexuality is adversely affected. [0003] With the development of spacecraft, according to the characteri...

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Problems solved by technology

At the same time, due to the inability to accurately control the working life of electronic products, the spacecraft had to be equipped with many redundant and backup electronic products, which caused problems such as complex system, heavy weight, and high power consumption, and increased the complexity of the design. adverse effects of sex

[0003] With the development of spacecraft, according to the characteristics of different missions, the working life cycle of the spacecraft is different. The design of the working life cycle is the key factor for its development cost control and reliability. Changes and other methods to achieve the purpose of controlling the predetermined life cycle, but my country has little research on the design of spacecraft life, the life cycle is much longer than the completion of the task cycle, long life and high reliability mainly rely on product over-design (design waste) to achieve, so not only The design and development costs are very high, and the reliability cannot be accurately controlled

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